BoxCryptor - Boxcryptor encrypts your sensitive files before uploading them to cloud storage services like Dropbox, Google Drive, Microsoft OneDrive, Box, and many others.
VeraCrypt - VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux.
Encrypto - Encrypto lets you encrypt files before sending them to friends or coworkers.
CryptoForge - CryptoForge is handy-to-use file encryption program for individual and organization to get a reliable safety.
Cryptsync - CryptSync.
SmartEncrypt - SmartEncrypt is easy-to-use next-generation encryption, providing encryption for today’s workplace...